Question

MCQ :-

⭐️ 1) A body floats in a liquid contained in a beaker. The whole system falls freely under gravity. The upward thrust on the body due to the liquid then is :

(a) zero
(b) equal to the liquid displaced
(c) equal to the weight of the body in air.
(d) equal to the weight of the immersed portion in the liquid.

__________________________

⭐️ 2) Clouds float in the atmosphere on account of their :
(a) low viscosity
(b) low density
(c) low temperature
(d) creation of low pressure

__________________________

⭐️ 3) After terminal velocity to reached, the acceleration of a body falling through a fluid is :
(a) equal to 'g'
(b) zero
(c) less than 'g'
(d) more than 'g'

__________________________

⭐️ 4) The property by virtue of which a fluid tries to prevent the relative motion between adjacent layers is called :
(a) Elasticity
(b) Rigidity
(c) Viscosity
(d) Cohesion

_________________________

⭐️ 5) Which one of the following substance has the greatest viscosity ?
(a) water
(b) mercury
(c) oxygen
(d) hydrogen

__________________________

⭐️ 6) According to Hooke's law of Elasticity, if stress is increased the ratio of stress to strain :
(a) increases
(b) decreases
(c) becomes zero
(d) remains constant

__________________________

⭐️ 7) Within elastic limit, stress is :
(a) zero
(b) independent of strain
(c) directly proportional to strain
(d) inversel proportional to strain

__________________________

⭐️ 8) A drop of liquid assumed spherical shape because of :
(a) density
(b) viscosity
(c) gravitation
(d) Surface tension


[NO SPAM ANSWERS]
[ATTEMPT ALL QUESTIONS & GIVE ME ALL ANSWERS]
[ I WILL GIVE YOU 30 POINTS☺️☺️]

Answer 1

Here's your answer....

1, a) Zero

2, b) Low density

3, b) Zero

4, c) Viscosity

5, a) Water

6, d) remains constant

7, c) directly proportional to strain.

8, d) Surface tension.


HOPE IT HELPS YOU... ☺☺☺

Answer 2

1] A body floats in a liquid contained in a beaker. The whole system falls freely under gravity. The upward thrust on the body due to the liquid then is :

Ans : (a) Zero.

==================================

2] Clouds float on the atmosphere on account of their :

Ans : (b) Low density.

==================================

3] After terminal velocity to reach, the acceleration of a body falling through a fluid is :

Ans : (b) Zero.

==================================

4] The property by virtue of which a fluid tries to prevent the relative motion between adjacent layers is called :

Ans : (c) Viscosity.

==================================

5] Which one of the following substance has the greatest viscosity?

Ans : (a) Water.

==================================

6] According to Hooke's Law of elasticity, if stress is increased the ratio of stress to strain :

Ans : (d) Remains constant.

==================================

7] Within elastic limit, stress is :

Ans : (c) Directly proportional to strain.

==================================

8] A drop of liquid assumed spherical shape because of :

Ans : (d) Surface tension



So solved (^_^)